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(由 Microsoft 翻譯) 有許多方法可以解決魔方,但它們都涉及使用公式來移動方塊。有些解決方案需要使用 50 多個公式,這相當難學。以下是已故吳世成先生發明的一套3個公式,這套公式很容易學習和記憶。請注意,需要很多動作,你不能很快解決這個謎題,但最終你將能夠解決它。
基本概念是先解角,再解邊。這是基於一個簡單的觀察,即僅移動中間行不會中斷拐角。
基本程式如下:
現在從公式 A 開始,該公式交換 3 個角塊的位置:
(為了便於演示,上面顯示的結果以解小方開始)
公式 A 如下所示:
請注意,前3個步驟涉及移除頂面的右下角,其餘步驟是放回去。您還可以應用此公式的變體,該變體將刪除頂部面的左下角並將其放回去,從而對下面的左上、左下角和右下角塊實現類似的效果。
將底部面的角塊移動到正確的位置(但不一定以正確的方向)後,可以應用公式 B 逆時針旋轉塊:
公式 B 如下:
請注意,前3個步驟涉及移除頂面的右下角,其餘步驟是放回去。如果應用此公式的變體,則下面的左上角、左下角和右下角塊將順時針旋轉。
完成所有 8 個角後,應使用公式 C 處理邊,公式 C 以逆時針方向交換邊上 3 個塊的位置:
公式 C 如下所示:
請注意,前3個步驟涉及移除中下塊,其餘步驟是把它放回去。您還可以應用此公式的變體,通過交換左右旋轉(如上所示)來順時針方向交換塊的位置。
使用公式 C 時,有時您會面臨不正確的塊不在同一面的情況,在這種情況下,您需要進行額外的移動,以在應用公式 C 之前將不正確的塊移動到同一面。
基本概念是先解角,再解邊。這是基於一個簡單的觀察,即僅移動中間行不會中斷拐角。
基本程式如下:
- 將一個面的四個角移至正確的方向(您不需要任何公式)
- 使用公式 A 將其餘四個角移動到其正確位置,但不一定以正確的方向移動。
- 使用公式 B 將剩餘的角塊旋轉到正確的方向。現在所有八個角都應該是正確的。
- 使用公式 C 將邊移動到正確的位置。
現在從公式 A 開始,該公式交換 3 個角塊的位置:
(為了便於演示,上面顯示的結果以解小方開始)
公式 A 如下所示:
請注意,前3個步驟涉及移除頂面的右下角,其餘步驟是放回去。您還可以應用此公式的變體,該變體將刪除頂部面的左下角並將其放回去,從而對下面的左上、左下角和右下角塊實現類似的效果。
將底部面的角塊移動到正確的位置(但不一定以正確的方向)後,可以應用公式 B 逆時針旋轉塊:
公式 B 如下:
請注意,前3個步驟涉及移除頂面的右下角,其餘步驟是放回去。如果應用此公式的變體,則下面的左上角、左下角和右下角塊將順時針旋轉。
完成所有 8 個角後,應使用公式 C 處理邊,公式 C 以逆時針方向交換邊上 3 個塊的位置:
公式 C 如下所示:
請注意,前3個步驟涉及移除中下塊,其餘步驟是把它放回去。您還可以應用此公式的變體,通過交換左右旋轉(如上所示)來順時針方向交換塊的位置。
使用公式 C 時,有時您會面臨不正確的塊不在同一面的情況,在這種情況下,您需要進行額外的移動,以在應用公式 C 之前將不正確的塊移動到同一面。
(原文) A Simple Set of Formulas for Magic Cube
There are many ways to solve Rubik's Cube, but they all involve the use of formulas to move the blocks. Some solutions require the use of more than 50 formulas which is rather difficult to learn. The following is a set of 3 formulas invented by late Mr. Ngai Shing Lee, and this set of formulas is easy to learn and remember. Note that a lot of moves is needed and you cannot solve the puzzle extremely quickly, but eventually you will be able to solve it.
The basic concept is to solve the corners first and then the edges. This is based on a simple observation that moving the middle rows alone will not disrupt the corners.
The basic procedure is as follows:
Now start with formula A, which swaps the positions of 3 corner blocks:
(For easy demonstration, the result shown above is starting with a solved cube)
Formula A goes as follows:
Note that the first 3 steps involve the removal of the lower right corner of the top face, and the remaining steps are to put it back. You can also apply a variation of this formula which removes and puts back the lower left corner of the top face to achieve a similar effect for the top left, bottom left and bottom right blocks on the bottom face.
After you have finished moving the corner blocks of the bottom face to their correct positions (but not necessarily in correct orientations), you can apply formula B to rotate the blocks counterclockwise:
Formula B goes as follows:
Note that the first 3 steps involve the removal of the lower right corner of the top face, and the remaining steps are to put it back. If you apply a variation of this formula, the top left, bottom left and bottom right blocks in the bottom face will be rotated clockwise.
After you have finished all the 8 corners, you should deal with the edges using formula C, which swaps the positions of 3 blocks on the edge in a counterclockwise direction:
Formula C goes as follows:
Note that the first 3 steps involve the removal of the lower middle block, and the remaining steps are to put it back. You can also apply a variation of this formula to swap the positions of the blocks in a clockwise direction by swapping the left and right rotations as shown above.
When using formula C, sometimes you will face a situation that the incorrect blocks are not on the same face, and in this case you will need to make extra moves to move the incorrect blocks to the same face before applying formula C.
There are many ways to solve Rubik's Cube, but they all involve the use of formulas to move the blocks. Some solutions require the use of more than 50 formulas which is rather difficult to learn. The following is a set of 3 formulas invented by late Mr. Ngai Shing Lee, and this set of formulas is easy to learn and remember. Note that a lot of moves is needed and you cannot solve the puzzle extremely quickly, but eventually you will be able to solve it.
The basic concept is to solve the corners first and then the edges. This is based on a simple observation that moving the middle rows alone will not disrupt the corners.
The basic procedure is as follows:
- Move the four corners of one face to their correct positions and correct orientations (you should not need any formulas for this)
- Use formula A to move the remaining four corners to their correct positions but not necessarily in correct orientations
- Use formula B to rotate the remaining corner blocks to their correct orientations. Now all eight corners should be correct
- Use formula C to move the edges to their correct positions
Now start with formula A, which swaps the positions of 3 corner blocks:
(For easy demonstration, the result shown above is starting with a solved cube)
Formula A goes as follows:
Note that the first 3 steps involve the removal of the lower right corner of the top face, and the remaining steps are to put it back. You can also apply a variation of this formula which removes and puts back the lower left corner of the top face to achieve a similar effect for the top left, bottom left and bottom right blocks on the bottom face.
After you have finished moving the corner blocks of the bottom face to their correct positions (but not necessarily in correct orientations), you can apply formula B to rotate the blocks counterclockwise:
Formula B goes as follows:
Note that the first 3 steps involve the removal of the lower right corner of the top face, and the remaining steps are to put it back. If you apply a variation of this formula, the top left, bottom left and bottom right blocks in the bottom face will be rotated clockwise.
After you have finished all the 8 corners, you should deal with the edges using formula C, which swaps the positions of 3 blocks on the edge in a counterclockwise direction:
Formula C goes as follows:
Note that the first 3 steps involve the removal of the lower middle block, and the remaining steps are to put it back. You can also apply a variation of this formula to swap the positions of the blocks in a clockwise direction by swapping the left and right rotations as shown above.
When using formula C, sometimes you will face a situation that the incorrect blocks are not on the same face, and in this case you will need to make extra moves to move the incorrect blocks to the same face before applying formula C.
作者 Novel Games
2008-01-10 15:50:51
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